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Finding the Fourth Proportional to 198,689.76, 274,180.95 and 108,045.63

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Solution

The fourth proportional to 198,689.76, 274,180.95 and 108,045.63 is: 149,097.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,689.76 : 274,180.95 = 108,045.63 : x
  2. Step 2: Convert to fraction form
    198,689.76/274,180.95 = 108,045.63/x
  3. Step 3: Cross multiply
    198,689.76x = 274,180.95 × 108,045.63
  4. Step 4: Simplify right side
    198,689.76x = 29,624,053,476.75
  5. Step 5: Solve for x
    x = 29,624,053,476.75/198,689.76
  6. Step 6: Final answer
    x = 149,097.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.